Paper
17 May 2010 Study on the diffraction performance of the etched blazed grating
Shuping Li, Xiangdiao Deng, Jingping Zhu
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Abstract
The diffraction properties of a silica-based etched diffraction grating are investigated by numerical simulation in threedimension. The field distribution of the electromagnetic filed in the near and far away groove area, the diffraction efficiency and spectral response of 8 channels are analyzed respectively. The numerical results show that the diffraction angle is not satisfied the famous grating formula, the deviation of the diffraction angle is increasing with the diffraction order. And when the groove depth is in the low and medium modulation region, the diffraction efficiency reaches over 90%, and the spectral response of an etched grating is uniform within the fiber communication spectrum range.
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Shuping Li, Xiangdiao Deng, and Jingping Zhu "Study on the diffraction performance of the etched blazed grating", Proc. SPIE 7719, Silicon Photonics and Photonic Integrated Circuits II, 77191L (17 May 2010); https://doi.org/10.1117/12.854093
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KEYWORDS
Diffraction

Diffraction gratings

Modulation

Electromagnetism

Finite-difference time-domain method

Silica

Phase shift keying

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